Description
REPLACEMENT FOR BENDIX SR-1. The SR-1 Spring Brake Valve is used in pre-121 duel circuit brake systems and serves two functions. During normal operation, it limits hold-off pressure to the springbrakes to 90 or 95 PSI. Should a loss of pressure occur in the rear service brakes service supply, the SR-1 valve will provide a modulated spring brake application that is proportional to service braking pressure delivered to the front axle. Popular use on HEAVY DUTY TRUCKS.
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